The calculated distance (air line) between Walldürn and Bochum-Hordel is approximately 164 miles respectively 264 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Walldürn and Bochum-Hordel has been calculated here.
Air line (approximately)
264 kilometers
142 nautical miles